Question

1. Express 53 pm, the size of a hydrogen atom, in scientific notation

Answer 1

To express 53 picometers (pm) in scientific notation, it can be written as 5.3 × 10^-11 pm.

Step-by-step explanation:

Scientific notation is commonly used in chemistry to express numbers that are extremely large or small. In scientific notation, a number is expressed as the product of a decimal number between 1 and 10 and a power of 10. To express 53 picometers (pm) in scientific notation, we can write it as 5.3 × 10-11 pm. In this notation, the decimal number 5.3 is between 1 and 10, and the exponent -11 indicates that the decimal point needs to be moved 11 places to the left.

Answer 2

`5.3* 10^(-11)\ m`

Step-by-step explanation:

In this problem, we need to express 53 pm in which is the size of a hydrogen atom, in scientific notation.

Any number can be expressed in scientific notation as follows :

`N=a* 10^b`

a is any real no and b is any integer

We know that, 1 pm =
`10^(-12)\ m`

It means,
`53\ pm=53* 10^(-12)\ m`

or

`53* 10^(-12)\ m=(53)/(10)* 10^(-12)* 10\\\\=5.3* 10^(-12+1)\\\\=5.3* 10^(-11)\ m`

Therefore, the above is the scientific notation for the size of a hydrogen atom.